Safari
Clear the Cookies and Cache
Open Safari
In the menu bar (top left of your screen) click History
At the bottom of the menu, choose Clear History…
Use the drop-down menu to select All History
One last time, click Clear History
Along with clearing your Safari history, this also clears your cookies and cache



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Firefox
Clear the Cookies and Cache
Click the menu button and select Preferences.
Select the Privacy & Security panel.
In the Cookies and Site Data section, click Clear Data….

4. Confirm Cookies and Site Data is checked
5. Confirm Cached Web Content check marked, click the Clear button.
6. Close the about:preferences page. Any changes you've made will automatically be saved.
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Chrome
In Chrome
On your computer, open Chrome
At the top left, click Chrome .
Click Preferences
Click Privacy and Security
Select Clear Browsing Data
Select Time Range All
You can deselect Browsing history if you like
Click Clear Data
